gotosocial/internal/federation/federatingdb/delete.go
2024-04-26 13:22:49 +01:00

153 lines
4 KiB
Go

// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package federatingdb
import (
"context"
"errors"
"net/url"
"github.com/superseriousbusiness/gotosocial/internal/ap"
"github.com/superseriousbusiness/gotosocial/internal/db"
"github.com/superseriousbusiness/gotosocial/internal/gtserror"
"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
"github.com/superseriousbusiness/gotosocial/internal/log"
"github.com/superseriousbusiness/gotosocial/internal/messages"
)
// Delete removes the entry with the given id.
//
// Delete is only called for federated objects. Deletes from the Social
// Protocol instead call Update to create a Tombstone.
//
// The library makes this call only after acquiring a lock first.
func (f *federatingDB) Delete(ctx context.Context, id *url.URL) error {
activityContext := getActivityContext(ctx)
if activityContext.internal {
return nil // Already processed.
}
// Extract receiving / requesting accounts.
requesting := activityContext.requestingAcct
receiving := activityContext.receivingAcct
// Serialize ID URI.
uriStr := id.String()
var (
ok bool
err error
)
// Attempt to delete account.
ok, err = f.deleteAccount(ctx,
requesting,
receiving,
uriStr,
)
if err != nil || ok { // handles success
return err
}
// Attempt to delete status.
ok, err = f.deleteStatus(ctx,
requesting,
receiving,
uriStr,
)
if err != nil || ok { // handles success
return err
}
// Log at debug level, as lots of these could indicate federation
// issues between remote and this instance, or help with debugging.
log.Debugf(ctx, "received delete for unknown target: %s", uriStr)
return nil
}
func (f *federatingDB) deleteAccount(
ctx context.Context,
requesting *gtsmodel.Account,
receiving *gtsmodel.Account,
uri string, // target account
) (
bool, // success?
error, // any error
) {
account, err := f.state.DB.GetAccountByURI(ctx, uri)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return false, gtserror.Newf("error getting account: %w", err)
}
if account != nil {
if account.ID != requesting.ID {
// TODO: handled forwarded deletes,
// for now we silently drop this.
return true, nil
}
log.Debugf(ctx, "deleting account: %s", account.URI)
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: ap.ObjectProfile,
APActivityType: ap.ActivityDelete,
GTSModel: account,
Receiving: receiving,
Requesting: requesting,
})
return true, nil
}
return false, nil
}
func (f *federatingDB) deleteStatus(
ctx context.Context,
requesting *gtsmodel.Account,
receiving *gtsmodel.Account,
uri string, // target status
) (
bool, // success?
error, // any error
) {
status, err := f.state.DB.GetStatusByURI(ctx, uri)
if err != nil && !errors.Is(err, db.ErrNoEntries) {
return false, gtserror.Newf("error getting status: %w", err)
}
if status != nil {
if status.AccountID != requesting.ID {
// TODO: handled forwarded deletes,
// for now we silently drop this.
return true, nil
}
log.Debugf(ctx, "deleting status: %s", status.URI)
f.state.Workers.Federator.Queue.Push(&messages.FromFediAPI{
APObjectType: ap.ObjectNote,
APActivityType: ap.ActivityDelete,
GTSModel: status,
Receiving: receiving,
Requesting: requesting,
})
return true, nil
}
return false, nil
}